Download Chemistry and Technology of Lubricants by R. J. Prince (auth.), Dr R. M. Mortier, Dr S. T. Orszulik PDF

By R. J. Prince (auth.), Dr R. M. Mortier, Dr S. T. Orszulik (eds.)

Show description

Read or Download Chemistry and Technology of Lubricants PDF

Best chemistry books

Ultra-Violet and Visible Spectroscopy: Chemical Applications

It might be superfluous to emphasize the significance of digital . spectroscopy in structural or analytic examine. It has now turn into an issue of regimen to checklist the ultra-violet or obvious spectra of compounds for reasons of id or constitution elucidation. The spectrophotonletric equipment of research have changed the traditional equipment in ever so rnany situations.

Aspects of African Biodiversity: Proceedings of the Pan Africa Chemistry Network Biodiversity Conference Nairobi, 10-12 September 2008 (Special Publications)

This publication is the lawsuits of the Pan Africa Chemistry community Biodiversity convention which was once held in September 2008. A key goal of the RSC/Syngenta Pan Africa Chemistry community (PACN) is to attach African scientists via a cycle of meetings and workshops and this convention held on the collage of Nairobi used to be the 1st of those.


Content material: Lindman, B. and Wennerström, H. Micelles. Amphiphile aggression in aqueous answer. -- Eicke, H. -F. Surfactants in nonpolar solvents. Aggregation and micellization

Extra info for Chemistry and Technology of Lubricants

Sample text

Energy costs are high because of the number of process steps needed and the energy intensive nature of equipment such as refrigeration plant and solvent recovery systems. 4 tonnes fuel oil equivalent per tonne of base oil product are not uncommon. The costs of capital tend to relate to the age of the base oil plant. A brand new plant has to be financed and since base oil production plant is very expensive to build, depreciation and interest charges will be considerable. Most of the present day base oil plant is at least 15 years old and so by now is almost fully depreciated.

However, the process had severe drawbacks; it was very labour intensive and oils of high viscosity could not be filtered at low temperatures. Filtration efficiency could be greatly improved by diluting the oil with solvents such as naphtha, but the selectivity for wax removal was reduced. Improved solvent systems have been developed to give better de-waxing performance and important factors in the choice of solvent are: • • • • • • Good solubility of oil in the solvent and low solubility of wax in the solvent.

6 Solvent extraction Solvent extraction replaced acid treatment as the method for improving oxidative stability and viscosity/temperature characteristics of base oils. The solvent selectively dissolves the undesired aromatic components (the extract), leaving the desirable saturated components, especially alkanes, as a separate phase (the raffinate). e. to give good yields of high quality raffinate) solvent absorption power (to minimise the solvent/oil ratio) ease of separation of extract and raffinate phases ease of solvent recovery (boiling point must be below that of the raffinate or extract) desirable solvent properties (such as stability, safety, low toxicity, ease of handling, cost).

Download PDF sample

Rated 4.02 of 5 – based on 6 votes